The last of Cyrus the Great’s dynastic inheritors and the legendary enemy of Alexander the Great, Darius III ruled over a Persian Empire that stretched from the Mediterranean to the Indus River. Yet, despite being the most powerful king of his time, Darius remains an obscure figure. […] While Darius seems doomed to be a footnote in the chronicle of Alexander’s conquests, in one respect it is Darius who has the last laugh. For after Darius’s defeat in 331 BCE, Alexander is described by historians as becoming ever more like his vanquished opponent: a Darius-like sybarite prone to unmanly excess.